|
| |
|
|
A133939
|
|
E.g.f. satisfies: A(x) = x*(tan(tan(A(x)))+1).
|
|
1
| |
|
|
0, 1, 2, 6, 40, 440, 5952, 97104, 1888640, 42480000, 1082119680, 30814080000, 970187827200, 33461288899584, 1254539018571776, 50803163905751040, 2209862882578300928, 102761280728930287616, 5087062588875762696192
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,3
|
|
|
LINKS
| Alois P. Heinz, Table of n, a(n) for n = 0..100
|
|
|
MAPLE
| A:= proc(n) option remember; if n=0 then 0 else convert (series (x* (tan (tan(A(n-1)))+1), x=0, n+1), polynom) fi end: a:= n-> coeff (A(n), x, n)*n!: seq (a(n), n=0..23);
|
|
|
CROSSREFS
| Sequence in context: A098852 A120592 A081471 * A045846 A199574 A135755
Adjacent sequences: A133936 A133937 A133938 * A133940 A133941 A133942
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Alois P. Heinz (heinz(AT)hs-heilbronn.de), Aug 27 2008
|
| |
|
|
